This isn't an essential-read memoir, but if you're a huge fan of Jeopardy!, like I am, you won't regret it - I especially recommend the audiobook narrated by Alex Trebek and Ken Jennings. Much of the book was a series of anecdotes about Trebek's life, but I liked the final few chapters, about modern changes to Jeopardy!, his cancer diagnosis, and seemingly the thoughts he wanted to make known before he died, best. I also appreciated his rejection of Pascal's wager toward the end of the book, that takes guts in the face of death and the internet's armchair philosophers.
Finally - he waited until the book's final words to mention that all proceeds from the book were being donated to charity. It was a classy move, and it fit right in with the bits of his personal commitment to charity that he expressed in the book.